Paper · 2017 · Indian Journal of Agronomy

Phenophase-based nitrogen and zinc scheduling for agronomic zinc biofortification and indices of wheat (Triticum aestivum)

Arup Layek; Saroj Kumar Prasad; Manoj Kumar Singh; et al.

7
claims
14
verbatim quotes
3
citations
2
research areas
—
Not open access

Abstract

A field experiment was conducted during winter (rabi) season of 2012–13 at Varanasi, Uttar Pradesh, to access nitrogen and zinc management on wheat (Triticum aestivum L.) phenophase (Zadoks scale) to increase yield, grain zinc content (agronomic biofortification) and agronomic indices of wheat. The experiment was laid out in a randomized block design (factorial) with 4 nitrogen scheduling [0 kg N/ha, 50% recommended dose of nitrogen (RDN) at sowing + 50% RDN at Z20, 50% RDN at sowing + 25% RDN at Z20 + 25% RDN at Z30 and 50% RDN at sowing + 25% RDN at Z20 + 25% RDN at Z37) and 4 zinc scheduling (0 kg Zn/ha, 0.5% Zn-EDTA spray at Z45, 0.25% Zn-EDTA spray at Z45 + 0.25% Zn-EDTA spray at Z60 and 0.25% Zn-EDTA spray at Z45 + 0.25% Zn-EDTA spray at Z73). Nitrogen scheduling (50% RDN at sowing + 50% RDN at Z20) and zinc scheduling (0.5% Zn-EDTA spray at Z45) recorded significantly higher effective tillers, 1, 000-grain weight, yield, zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE) over the other treatments. Nitrogen and zinc management also positively interacted and recorded higher effective tillers, grain yield, and nitrogen and zinc uptake with N1 × Zn1; however, the maximum grain zinc content (52.30 mg/kg) was recorded with N3 × Zn2 combination.

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Claims 7

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The named nitrogen schedule increased effective tillers, grain weight and yield over other treatments.

Treatment
50% RDN at sowing + 50% RDN at Z20e0
Outcome
effective tillers, 1, 000-grain weight, yielde0
Direction
highere0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen scheduling (50% RDN at sowing + 50% RDN at Z20) and zinc scheduling (0.5% Zn-EDTA spray at Z45) recorded significantly higher effective tillers, 1, 000-grain weight, yield, zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE) over the other treatments.”

✓ located verbatim in the source · abstract, characters 760–1071 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The named zinc spray schedule increased effective tillers, grain weight and yield over other treatments.

Treatment
0.5% Zn-EDTA spray at Z45e0
Outcome
effective tillers, 1, 000-grain weight, yielde0
Direction
highere0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen scheduling (50% RDN at sowing + 50% RDN at Z20) and zinc scheduling (0.5% Zn-EDTA spray at Z45) recorded significantly higher effective tillers, 1, 000-grain weight, yield, zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE) over the other treatments.”

✓ located verbatim in the source · abstract, characters 760–1071 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The nitrogen schedule increased zinc uptake and efficiency indices over other treatments.

Treatment
50% RDN at sowing + 50% RDN at Z20e0
Outcome
zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE)e0
Direction
highere0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen scheduling (50% RDN at sowing + 50% RDN at Z20) and zinc scheduling (0.5% Zn-EDTA spray at Z45) recorded significantly higher effective tillers, 1, 000-grain weight, yield, zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE) over the other treatments.”

✓ located verbatim in the source · abstract, characters 760–1071 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The zinc spray schedule increased zinc uptake and efficiency indices over other treatments.

Treatment
0.5% Zn-EDTA spray at Z45e0
Outcome
zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE)e0
Direction
highere0
Comparator
other treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen scheduling (50% RDN at sowing + 50% RDN at Z20) and zinc scheduling (0.5% Zn-EDTA spray at Z45) recorded significantly higher effective tillers, 1, 000-grain weight, yield, zinc uptake, partial factor productivity (PEP), agronomic efficiency (AE) and recovery efficiency (RE) over the other treatments.”

✓ located verbatim in the source · abstract, characters 760–1071 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N1 × Zn1 interaction produced higher effective tillers and grain yield.

Treatment
N1 × Zn1e0
Outcome
effective tillers, grain yielde0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen and zinc management also positively interacted and recorded higher effective tillers, grain yield, and nitrogen and zinc uptake with N1 × Zn1; however, the maximum grain zinc content (52.30 mg/kg) was recorded with N3 × Zn2 combination.”

✓ located verbatim in the source · abstract, characters 1072–1317 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N1 × Zn1 interaction produced higher nitrogen and zinc uptake.

Treatment
N1 × Zn1e0
Outcome
nitrogen and zinc uptakee0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen and zinc management also positively interacted and recorded higher effective tillers, grain yield, and nitrogen and zinc uptake with N1 × Zn1; however, the maximum grain zinc content (52.30 mg/kg) was recorded with N3 × Zn2 combination.”

✓ located verbatim in the source · abstract, characters 1072–1317 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N3 × Zn2 produced maximum grain zinc content of 52.30 mg/kg.

Treatment
N3 × Zn2 combinatione0
Outcome
grain zinc contente0
Direction
maximume0
Value
52.30 mg/kge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen and zinc management also positively interacted and recorded higher effective tillers, grain yield, and nitrogen and zinc uptake with N1 × Zn1; however, the maximum grain zinc content (52.30 mg/kg) was recorded with N3 × Zn2 combination.”

✓ located verbatim in the source · abstract, characters 1072–1317 · show in text ↑
t0

“wheat (Triticum aestivum)”

✓ located verbatim in the source · title, characters 97–122 · show in text ↑

zinc atom · yield · Triticum aestivum (wheat)Results differ

511 papers: 456 positive, 55 negative or no effect

455 papers in the same direction as this paper · 49 in the opposite direction · 6 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

507 papers more in this group

See all 511 papers →

zinc atom · nutrient: efficiency · Triticum aestivum (wheat)Results agree

12 papers: 12 positive, 0 negative or no effect

11 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

nitrogen · nutrient: efficiency · Triticum aestivum (wheat)Results differ

174 papers: 127 positive, 47 negative or no effect

126 papers in the same direction as this paper · 45 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

170 papers more in this group

See all 174 papers →

application · nutrient: efficiency · Triticum aestivum (wheat)Positive and negative results

22 papers: 21 positive, 1 negative or no effect

20 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

18 papers more in this group

See all 22 papers →

application · yield · Triticum aestivum (wheat)Positive and negative results

877 papers: 795 positive, 82 negative or no effect

794 papers in the same direction as this paper · 75 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

873 papers more in this group

See all 877 papers →

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

2,057 papers more in this group

See all 2,061 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.